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All CERN Accelerators documents

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2023-03-18
06:52
Radiation Protection at the Large Hadron Collider: Problematics, Challenges and Advanced Monte Carlo Simulation Techniques / Infantino, Angelo (CERN) ; Björkman, Daniel (CERN) ; Elie, Lucie (CERN) ; Maietta, Maddalena (CERN) ; Tromel, Christophe (CERN) ; Vincke, Heinz (CERN)
This paper provides an overview of the problems, challenges, and the advanced simulation techniques used to study and plan complex interventions in radiation areas at CERNs Large Hadron Collider and its future upgrade to the High-Luminosity Large Hadron Collider. The operational radiation protection aspects are supported by state of the art simulations by means of the FLUKA Monte Carlo code and estimates conducted via other tools such as ActiWiz and SESAME, used within the HSE-RP group..
2022 - 12 p. - Published in : Environments 9 (2022) 54 Fulltext: PDF;

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2023-03-17
06:16
Double phase transition numerical modeling of superfluid helium for fixed non-uniform grids / Vitrano, Andrea (U. Paris-Saclay ; CERN) ; Baudouy, Bertrand (U. Paris-Saclay)
A thermo-fluid dynamic numerical model for the simulation of the first-order and second-order phase transitions in superfluid helium (He II) is presented. The model is based on a Finite Volume Method algorithm for transient multidimensional problems [...]
2022 - 16 p. - Published in : Comput. Phys. Commun. 273 (2022) 108275 Fulltext: PDF;

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2023-03-17
06:15
Integrated stratigraphic, sedimentological and petrographical evaluation for CERN’s Future Circular Collider subsurface infrastructure (Geneva Basin, Switzerland-France) / Haas, Maximilian (CERN ; Geneva U.) ; Carraro, Davide (Geneva U.) ; Ventra, Dario (Geneva U.) ; Plötze, Michael (Zurich, ETH) ; De Haller, Antoine (Geneva U.) ; Moscariello, Andrea (Geneva U.)
AbstractThe European Organization for Nuclear Research (CERN) is currently undertaking a feasibility study to build the next-generation particle accelerator, named the Future Circular Collider (FCC), hosted in a 90–100 km subsurface infrastructure in the Geneva Basin, extending across western Switzerland and adjacent France. This article represents a preliminary, basin-scale stratigraphic and lithotype analysis using state-of-the-art Swiss and French stratigraphic terminology, set in context with the FCC. [...]
2022 - 43 p. - Published in : Swiss Journal of Geosciences 115 (2022) 16 Fulltext: PDF;

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2023-03-17
06:15
Application of Copper Thermal Spraying for Electrical Joints between Superconducting Nb$_3$Sn Cables / D'Auria, Vincenzo (PSI, Villigen) ; Bruzzone, Pierluigi (PSI, Villigen) ; Meyer, Mickael Sebastian (CERN) ; Castro, Enrique Rodriguez (CERN ; Carlos III U., Madrid) ; Sgobba, Stefano (CERN)
This manuscript reports on the application of copper thermal spraying in the manufacturing process of an electrical connection between Nb3Sn cables for superconducting magnets of fusion reactors. The joint is realized through diffusion bonding of the sprayed coating of the two cables. [...]
2021 - 10 p. - Published in : Materials 15 (2021) 125 Fulltext: PDF;

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2023-03-17
04:32
Towards a Muon Collider / Accettura, Carlotta (CERN) ; Adams, Dean (Rutherford) ; Agarwal, Rohit (UC, Berkeley (main)) ; Ahdida, Claudia (CERN) ; Aimè, Chiara (Pavia U. ; INFN, Pavia) ; Amapane, Nicola (INFN, Turin ; Turin U.) ; Amorim, David (CERN) ; Andreetto, Paolo (INFN, Padua) ; Anulli, Fabio (INFN, Rome) ; Appleby, Robert (Manchester U.) et al.
A muon collider would enable the big jump ahead in energy reach that is needed for a fruitful exploration of fundamental interactions. [...]
arXiv:2303.08533. - 118 p.
Fulltext

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2023-03-16
07:28
Development of New Beam Position Detectors for the NA61/SHINE Experiment / Urbaniak, Marta (Silesia U.) ; Balkova, Yuliia (Silesia U.) ; Kowalski, Seweryn (Silesia U.) ; Puławski, Szymon (Silesia U.) ; Wójcik, Kamil (Silesia U.)
NA61/SHINE is a fixed-target experiment located at the CERN Super Proton Synchrotron (SPS). The development of new beam position detectors is part of the upgrade of the detector system. [...]
2022 - 4 p. - Published in : JACoW IBIC 2022 (2022) 84-87 Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.84-87

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2023-03-16
07:28
FOCUS: Fast Monte-CarlO Approach to Coherence of Undulator Sources / Siano, Mirko (U. Milan (main)) ; Butti, Daniele (CERN) ; Geloni, Gianluca (European XFEL, Hamburg) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Nosych, Andriy (CELLS - ALBA, LLS) ; Paroli, Bruno (U. Milan (main)) ; Potenza, Marco (U. Milan (main)) ; Torino, Laura (CELLS - ALBA, LLS) et al.
We present Fast Monte-CarlO approach to Coherence of Undulator Sources (FOCUS), a new GPU-based code to compute the transverse coherence of X-ray radiation from undulator sources. The code relies on scaled dimension- less quantities and analytic expressions of the electric field emitted by electrons in an undulator. [...]
2022 - 4 p. - Published in : JACoW IBIC 2022 (2022) 257-260 Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.257-260

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2023-03-16
07:28
Optimization Study of Beam Position and Angular Jitter Independent Bunch Length Monitor for Awake Run 2 / Davut, Can (U. Manchester (main) ; Cockcroft Inst. Accel. Sci. Tech. ; CERN) ; Apsimon, Oznur (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Karataev, Pavel (Royal Holloway, U. of London) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Xia, Guoxing (U. Manchester (main) ; Cockcroft Inst. Accel. Sci. Tech.)
In this paper, a study using the Polarization Current Approach (PCA) model is performed to optimize the design of a short bunch length monitor using two dielectric radiators that produce coherent Cherenkov Diffraction Radiation (ChDR). The electromagnetic power emitted from each radiator is measuring a different part of the bunch spectrum using Schottky diodes. [...]
2022 - 4 p. - Published in : JACoW IBIC 2022 (2022) 465-468 Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.465-468

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2023-03-16
07:28
LINAC4 Laser Profile and Emittance Meter Commissioning / Goldblatt, Aurélie (CERN) ; Andreassen, Odd (CERN) ; Boorman, Gary (JAI, UK) ; Bosco, Alessio (JAI, UK) ; Gibson, Stephen (JAI, UK) ; Hofmann, Thomas (Unlisted, CH) ; Roncarolo, Federico (CERN) ; Tagg, Joseph (CERN)
The CERN LINAC4 is now equipped with two laser profile and emittance meters, a basically non destructive measurement of the transverse beam profile, not limited by the beam power density. The light of a pulsed laser is trans- ported through optical fibers and focused into the 160 MeV/c $H^{-}$ beam. [...]
2022 - 5 p. - Published in : JACoW IBIC 2022 (2022) 357-361 Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.357-361

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2023-03-16
07:28
Experimental Investigation of Gold Coated Tungsten Wires Emissivity for Applications in Particle Accelerators / Navarro Fernandez, Araceli (CERN) ; Martin Nieto, Miguel (CERN) ; Roncarolo, Federico (CERN)
The operation of wire grids and wire scanners as beam profile monitors can be heavily affected, both in terms of measurement accuracy and wire integrity, by the thermal response of the wires to the energy deposited by the charged particles. Accurate measurements of material emissivity are crucial, as Radiative Cooling represent the most relevant cooling process. [...]
2022 - 5 p. - Published in : JACoW IBIC 2022 (2022) 438-442 Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.438-442

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